Lamp



FIG. 1 is a top, front perspective view of a lamp showing the design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right elevational view thereof;

FIG. 5 is a left elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Throughout the figures, broken lines indicate boundaries that form no part of the claimed design. 

CLAIM The ornamental design for a lamp, as shown and described. 